Study selection and assessment:

randomised controlled trials (RCTs) of adults having surgery in a designated operating theatre that compared hair removal
by any method (shaving, clipping, or depilatory cream) with no hair removal or with another hair removal method; hair removal
at different times before surgery; or hair removal in different settings (eg, operating room, anaesthetic room, ward, or home).
Quality assessment of individual studies was based on randomisation method, allocation concealment, blinding, withdrawals
and drop out rates, clear …